#region The MIT License
// The MIT License
// 
// Copyright (c) 2009 octalforty studios
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
#endregion
using System;
using System.ComponentModel.Composition;
using System.Diagnostics;

namespace octalforty.Componento.ComponentModel.Installation
{
    public interface IResourceInstallerResolverService
    {
        IResourceInstaller ResolveResourceInstaller(Uri resourceUri);
    }

    [Export(typeof(IResourceInstallerResolverService))]
    public class ResourceInstallerResolverService : IResourceInstallerResolverService
    {
        private Lazy<IResourceInstaller>[] resourceInstallers;

        [ImportMany()]
        public Lazy<IResourceInstaller>[] ResourceInstallers
        {
            [DebuggerStepThrough]
            get { return resourceInstallers; }
            [DebuggerStepThrough]
            set { resourceInstallers = value; }
        }

        #region IResourceInstallerResolverService Members
        public IResourceInstaller ResolveResourceInstaller(Uri resourceUri)
        {
            if(resourceUri == null) 
                throw new ArgumentNullException("resourceUri");
            
            if(ResourceInstallers == null)
                return null;

            foreach(Lazy<IResourceInstaller> resourceInstaller in ResourceInstallers)
                if(resourceInstaller.Value.CanInstall(resourceUri))
                    return resourceInstaller.Value;

            return null;
        }
        #endregion
    }
}
